Water filtration and purification units and replacement cartridges and filters therefor; Water treatment equipment, namely, water filtration units and reverse osmosis units; Water filtering units for domestic use; Filters for drinking water; Plumbing fittings, namely, faucet filters; Apparatus for filtering drinking water; Filters for water filtering apparatus; Household tap-water filters; Water purification and filtration apparatus; Faucet filters; Water filters; Water filtration and purific...